Name: Heavy Snow and Winter Weather in Wisconsin, April 7 to 8, 2010
Start: 2010-04-07T19:00
End: 2010-04-08T08:00
Location: Wisconsin

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 2
Injuries: 8
Property damage: None recorded
Crop damage: None recorded
Events: 3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GRB wrote it up.

Low pressure that moved across Illinois into lower Michigan produced rain, and later snow, in northeast Wisconsin. The rain quickly changed to snow when the winds shifted, bringing much colder air from Canada into the the area.

Snowfall totals were in the 4 to 7 inch range across several counties. The highest totals included 7.0 inches in Suring (southern Oconto Co.) and 6.0 inches at both Suamico (Brown Co.) and the west side of De Pere (Brown Co.).

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Green Bay, WI wrote its last area forecast discussion before the first event at Apr 7, 2:34 PM CST, 4 hours 26 minutes earlier.

Area forecast discussion, Apr 7, 2:34 PM CST, 4 hours 26 minutes before

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Hazardous weather outlook, Apr 7, 3:54 AM CST, 15 hours 6 minutes before

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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

2 heavy snow, 1 winter weather. Local standard time, as filed.

Heavy Snow, Brown

When: April 7, 7:00 PM CST to April 8, 7:00 AM CST
Where: Brown forecast zone
Reported by: Trained Spotter
Coordinates: 44.474, -87.993 (the zone’s center; the record gives no point)

Heavy Snow, Southern Oconto

When: April 7, 7:00 PM CST to April 8, 7:00 AM CST
Where: Southern Oconto forecast zone
Reported by: COOP Observer
Coordinates: 44.999, -88.221 (the zone’s center; the record gives no point)

Winter Weather, Northern Marinette

When: April 7, 8:00 PM CST to April 8, 8:00 AM CST
Where: Northern Marinette forecast zone
Deaths: 0 direct, 2 indirect
Injuries: 0 direct, 8 indirect
Reported by: Newspaper
Coordinates: 45.351, -88.002 (the zone’s center; the record gives no point)

Although snowfall was lighter across northeast Wisconsin, it produced slippery roads across the area. A teenager driving his five siblings and a neighbor to school in a minivan lost control of the vehicle on a snow-covered section of U.S. Highway 8 in Goodman. Two pickup trucks then struck the minivan, ejecting 4 of its occupants. The driver's brother and neighbor were killed in the accident. The driver's 12 year old brother was sent to a Green Bay hospital with serious injuries and his 5 year old sister was hospitalized in Iron Mountain, MI. The rest of the minivan's occupants and 3 occupants of the pickup trucks were treated at and released.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
Winter Weather, Northern Marinette	2010-04-08	18	Male	Vehicle/Towed Trailer	Indirect
Winter Weather, Northern Marinette	2010-04-08	15	Female	Vehicle/Towed Trailer	Indirect

What these are

Heavy Snow: Snowfall reaching the local warning threshold without the other hazards of a winter storm.
Winter Weather: Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Wisconsin in 2010 Every state in 2010 This day in weather history Warnings in Wisconsin, April 2010

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 222177, 222178, 225435.